in afghanistan, another blow to the rule of president karzai today. they gunned down his most precious aide. karzai's half-brother was assassinated early last week. in eastern afghanistan, nato helicopter air strikes today hit a school where insurgents were said to have gathered. at least ten insurgents were killed. there were no youngsters in school at the time. remember the days when the marine corps advertised it was "looking for a few good men"? well, times have changed, and today marines are recruiting women as well. there seems to be no limit as to how high they can go. this is tonight's "sunday cover": a new commanding officer with a legendary marine corps post. this is parris island, south carolina. as the sign makes clear on the way in, here is where they make marines. now this marine factory has a new foreman. >> what i'd ask you to do is... >> reporter: or forewoman, brigadier general loretta reynolds. when you found out you were getting this post, what was your first reaction? >> there are times now that i wake up in the morning and say, "